全文获取类型
收费全文 | 626篇 |
免费 | 16篇 |
国内免费 | 7篇 |
专业分类
安全科学 | 14篇 |
废物处理 | 60篇 |
环保管理 | 62篇 |
综合类 | 67篇 |
基础理论 | 126篇 |
环境理论 | 1篇 |
污染及防治 | 185篇 |
评价与监测 | 72篇 |
社会与环境 | 56篇 |
灾害及防治 | 6篇 |
出版年
2024年 | 1篇 |
2023年 | 17篇 |
2022年 | 53篇 |
2021年 | 41篇 |
2020年 | 21篇 |
2019年 | 18篇 |
2018年 | 48篇 |
2017年 | 28篇 |
2016年 | 35篇 |
2015年 | 30篇 |
2014年 | 39篇 |
2013年 | 60篇 |
2012年 | 25篇 |
2011年 | 34篇 |
2010年 | 20篇 |
2009年 | 22篇 |
2008年 | 25篇 |
2007年 | 23篇 |
2006年 | 24篇 |
2005年 | 15篇 |
2004年 | 12篇 |
2003年 | 18篇 |
2002年 | 13篇 |
2001年 | 12篇 |
2000年 | 4篇 |
1999年 | 1篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1992年 | 4篇 |
1985年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有649条查询结果,搜索用时 187 毫秒
511.
This study examines the different ways women in Science, Technology, Engineering, and Mathematics (STEM) occupations cope with systemic stereotype threat. Although it is theorized that women in STEM engage multiple and simultaneous strategies in response to stereotype threat, rarely are coping strategies studied in combination. This leaves us with an incomplete picture of coping behavior. To address this gap, we adopt a person-centered approach to examine nine multilevel stereotype threat management strategies. Drawing from a sample of 515 women in male-dominated STEM occupations, we use latent profile analysis (LPA) to uncover three distinct profiles (Preservationists, Protectors, and Protagonists) which differ by degree of strategy engagement and preferred location of response (intrapersonal, interpersonal, and institutional). Our findings also show that profile membership is differently associated with person-related (gender centrality, science identity, and stigma consciousness) and work-related factors (perceived organizational support, negative emotions at work, and exit due to gender-based bias) relevant to persistence. This work demonstrates the value of a person-centered approach in distinguishing coping profiles within and between STEM women in a naturalistic context. It also suggests that organizations can better support STEM women by tailoring interventions that account for differences in coping behavior. 相似文献
512.
de Vasconcelos Vera Mônica de Morais Elís Regina Costa Faustino Samantha Joyce Bezerra Hernandez Maria Carolina Ramirez Gaudêncio Hiara Ruth da Silva Câmara de Melo Rafael Rodolfo Bessa Junior Ambrósio Paula 《Environmental science and pollution research international》2021,28(3):2600-2607
Environmental Science and Pollution Research - Aquaculture is an activity with economic and social importance since it generates food, employment, and income. However, like other human activities,... 相似文献
513.
Samuel C. Gomides Talita M. Machado Jôine C. Evangelista-Vale Angele Tatiane Martins-Oliveira João Carlos Pires-Oliveira Angélica Muller Lucas Barros da Rosa Domingos Lucas Santos-Silva Pedro V. Eisenlohr 《Conservation biology》2021,35(6):1821-1832
The reintroduction of a species that is extinct in the wild demands caution because reintroduction locations may be associated with threats, such as hunting, poor-quality habitat, and climate change. This is the case for Cyanopsitta spixii (Spix's Macaw), which has been extinct in the wild since 2000. The few living individuals were created in captivity and will be used in a reintroduction project within the species’ original distribution area, the Caatinga domain (Brazil). Because the occurrence records for this bird are old and inaccurate, we investigated the current and future environmental suitability of the 14 plant species used by C. spixii as resource. These plants are key elements for the long-term reestablishment of the species in the wild, so the use of models helps in the assessment of the effects of climate change on the availability of these resources for the species and informs selection of the best places for reintroduction. We based our models of environmental suitability on 19 bioclimatic variables and nine physical soil and topography variables. Climate projections were created for the present and for the year 2070 with an optimistic (SSP2-4.5) and a pessimistic (SSP5-8.5) climate scenario. Both future climate scenarios lead to a reduction in area of environmental suitability that overlapped for all the plant species: 33% reduction for SSP2-4.5 and 63% reduction for SSP5-8.5. If our projections materialize, climate change could thus affect the distribution of key resources, and the maintenance of C. spixii would depend on restoration of degraded areas, especially riparian forests, and the preservation of already existing natural areas. The Caatinga domain is very threatened by habitat loss and, for the success of this reintroduction project, the parties involved must act to protect the species and the resources it uses. 相似文献
514.
Honscha Laiz Coutelle Campos Audrey Senandes Tavella Ronan Adler Ramires Paula Florencio Volcão Lisiane Martins Halicki Priscila Cristina Bartolomeu Pech Tatiani Maria Bernardi Eduardo Ramos Daniela Fernandes Niemeyer Júlia Carina Baisch Paulo Roberto Martins Baisch Ana Luíza Muccillo da Silva Júnior Flávio Manoel Rodrigues 《Environmental science and pollution research international》2021,28(21):26664-26676
Environmental Science and Pollution Research - This study aimed to use bioassays (single and multispecies) with organisms from different trophic levels to assess soil quality in reclaimed coal... 相似文献
515.
Jessica R. Quinlan Shannon J. O'Leary Andrew T. Fields Martin Benavides Emily Stumpf Ramon Carcamo Joel Cruz Derrick Lewis Beverly Wade George Amato Sergios-Orestis Kolokotronis Gina M. Clementi Demian D. Chapman 《Conservation biology》2021,35(3):991-1001
Developing-world shark fisheries are typically not assessed or actively managed for sustainability; one fundamental obstacle is the lack of species and size-composition catch data. We tested and implemented a new and potentially widely applicable approach for collecting these data: mandatory submission of low-value secondary fins (anal fins) from landed sharks by fishers and use of the fins to reconstruct catch species and size. Visual and low-cost genetic identification were used to determine species composition, and linear regression was applied to total length and anal fin base length for catch-size reconstruction. We tested the feasibility of this approach in Belize, first in a local proof-of-concept study and then scaling it up to the national level for the 2017–2018 shark-fishing season (1,786 fins analyzed). Sixteen species occurred in this fishery. The most common were the Caribbean reef (Carcharhinus perezi), blacktip (C. limbatus), sharpnose (Atlantic [Rhizoprionodon terraenovae] and Caribbean [R. porosus] considered as a group), and bonnethead (Sphyrna cf. tiburo). Sharpnose and bonnethead sharks were landed primarily above size at maturity, whereas Caribbean reef and blacktip sharks were primarily landed below size at maturity. Our approach proved effective in obtaining critical data for managing the shark fishery, and we suggest the tools developed as part of this program could be exported to other nations in this region and applied almost immediately if there were means to communicate with fishers and incentivize them to provide anal fins. Outside the tropical Western Atlantic, we recommend further investigation of the feasibility of sampling of secondary fins, including considerations of time, effort, and cost of species identification from these fins, what secondary fin type to use, and the means with which to communicate with fishers and incentivize participation. This program could be a model for collecting urgently needed data for developing-world shark fisheries globally. Article impact statement: Shark fins collected from fishers yield data critical to shark fisheries management in developing nations. 相似文献
516.
da Silva Joelma P. do S. Costa Maria Campina Fabia F. Bezerra Camila F. de Freitas Thiago S. Sousa Amanda K. Sobral Souza Celestina E. de Matos Yedda M. L. S. Pereira-Junior Francisco N. Menezes Irwim R. A. Coutinho Henrique D. M. Rocha Janaína E. 《Environmental geochemistry and health》2021,43(4):1609-1616
Environmental Geochemistry and Health - Mercury is widely found in nature, however, in low concentrations, but anthropological activities have increased its concentration considerably. This causes... 相似文献
517.
de Moraes Calado Sabrina Loise Salgado Lilian Dalago Santos Gustavo Souza da Silva Carvalho Neto Fernando de Menezes Márcia Santos 《Environmental science and pollution research international》2021,28(5):5283-5295
Environmental Science and Pollution Research - Metal contamination is a threat to estuarine environments. They can accumulate in the food chain and cause toxic effects on aquatic organisms and... 相似文献
518.
Pisani Reinaldo Alves de Castro Marcus César Avezum da Costa Antonio Alvares 《Journal of Material Cycles and Waste Management》2018,20(2):1216-1227
Journal of Material Cycles and Waste Management - Predicting municipal solid waste (MSW) generation is fundamental in choosing and scaling the processes involved in municipal management. The... 相似文献
519.
Correia Felipo Obed Almeida Tarcísio Silva Garcia Rui Lorenzo Queiroz Antônio Fernando S. Smichowski Patricia da Rocha Gisele Olímpio Araujo Rennan Geovanny O. 《Environmental science and pollution research international》2019,26(21):21416-21424
Environmental Science and Pollution Research - In this work, fast sequential determination and chemical speciation analysis of inorganic arsenic and antimony in airborne particulate matter... 相似文献
520.